Othniel gilmore



OTHNIE'L GILMORRKOF RA'YNHAM, MASSACHUSETTS.

Lette/rs Patent No. 87,837, dated Ma/rch 16,1869.

IMPROVEMENT IN I LIQUID-METERS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern Be it known that I, OTHNIEL GILMORE, of Raynham, in the county of Bristol, and State of Massachusetts, have invented an 'Improved Water-Meter; and I'do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invention suliicient to enable those skilled in the ait to practise it.

' A simple, cheap, accurate, and efci'entwater-meter has been the subject of much thought and experiment; and the object of my invention is the production ,of such a meter, which is shown in plan in Figure 1, with the cover, or bead removed, to exhibit the interior, and in cross central section in Figure 2.

a isla close casing, provided with a movable head, b, and arranged with an inlet at c, and an outlet at d.

W'ithin the casing a is a close box, or chamber, e, provided 'on one side with two nipples, to which are secured two exible water-proof pipes, f, preferably of thin rubber, and as the inlet at o communicates with the space in the chamber e, itis evident that water can flow, under ahead, or pressure, from a supply-pipe coupled to the inlet c, through the flexible pipes f, and out of their open ends into the inten'orof the casing, and out of the delivery, or service-pipe, coupled to outlet d.

Within the casing a is a cylindrical wall, g, preferably faced with rubber or other yielding material, hl and to a shaft, i, concentric with the cylinder g,`is fixed a frame, j, to the outer bars k ofwhich are pivoted arms Z, each carrying, at one end, a roll, m, the inner oppoi site ends of the arms l being coupled togetherin pairs by spiral springs a, the eli'ect of which is to press the rolls Imk outward against the pipes f, which tliey close at their lines of contact with lthe rolls.

The axes of each co-operating pair of coupled rolls m are in a plane passing through the axis of shaft i, but the dilereut pairs are not in the saine plane, one being advanced beyond the other, so that only one roll shall actat the same moment, in passing upon or oi from the flexible pipes.

Within the cylinder y is fixed `a curved incline, o, which operates, as the frame j, and the rolls carried thereby, are made to move around the pipes f, by the flow of the water-current therein, to press back the rolls toward the shaft 2'., in traversing from the beginning of the incline, at the open delivery-mouths ofthe pipes f, to the end of the incline, where the rolls drop oil therefrom upon the pipes, and compress them.

It will be seen that as water is drawn from the outlet, its placewill be supplied by water flowing through thelpipes f, which it can only do by forcing the rolls m ahead of the incoming current, the pipes being closed wherever the rolls press upon them.

It will also he seen that at each revolution of a pair of (zo-operative rolls, the pipe on which they act will receive and discharge only the contents of its capacity between the bite of said rolls upon the pipe, there being at no time a free passage, or iiow through the pipe, which is always checked by one of the rolls, and at times by both. l

As theuid discharges into the enclosed space around the pipes f, it will be obvious that the pressures upon the inside and outside of the pipesare substantially or nearly equal, so that the pipes themselves may be made very thin and flexible, requiring but little force to close them by the action of the rolls.

To lessen the frictional Wear ofthe rolls on the pipes, they may have interposed between them and the roll a thin exible band. A

In the drawings, I have shown a meter made in ac cordancc with my invention, having two flexible pipes;

but one pipe, however, might be used, or any otherV greater number, without departure from my invention.

By experiment, it will be ascertained how much duid will be delivered from the flexible pipe, or the assemblage of ilexible pipes, at each rotation of the frame carrying the pinching-rolls, which act as stop-valves to the current through the pipe or pipes; and then, by any suitable counter-mechanism coupled with the shaft i, to register the number of its rotations, the quantity of fluid passing through the meter can be readily ascertained.

I claim a water-meter, in which flexible pipes, and pinching-rolls operating thereon, and operated by the current assing through the pipes, are employed as d escribed, 'hen the pipes are so arranged as to have upon them the pressure of the water, both inside and 'outside.

OTHNIEL GILMORE. Witnesses:

J. B, CROSBY, L. H. LATIMEB. 

